Judi solved the equation 1 - 18 = 43. Her work is shown.
What error did Judi make?

7. if the value of x varies directly with the value of y, and x = 3 when y = 21. what is the valu y, and x = 3 when y = 21. what is the value of x when y = 105?

Write the following as a base and exponent

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?